I took this test at about 4 AM and then made an appointment with an OB/GYN for 10:30 AM. By the time I got to the OB/GYN, the urine test was negative. She gave me a blood test as well and an ultrasound to make sure the IUD was in the right place. The IUD was where it was supposed to be and the blood test showed up negative. From what I’m reading I think it’s just a chemical pregnancy. My egg is fertilized but could never implant because of my Mirena. Has this happen to anybody else?